M.H.
C.,
You could use instrumental versions of children's songs, or possibly karaoke music that is only the music portion.
I did this for my son's first year and I used a combination of songs to span the length of the video. Most of the music was for background effect, some was christmas themed.
Possibilities: Kenny Loggins - Return to Pooh Corner cd, lullaby music?, veggie tales, classical - baby einstein, Raffi, some of the songs used for weddings might be appropriate.
I would use something that your family enjoys listening too, even if it's not baby music, like the beatles, or modern music.
M.